Tools & Wizards About Us
weltbildung.com screenshot

Report Summary

  • 55

    Performance

    Renders faster than
    72% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 58

    SEO

    Google-friendlier than
    21% of websites

weltbildung.com

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Page Load Speed

3.4 sec in total

First Response

487 ms

Resources Loaded

2.6 sec

Page Rendered

325 ms

weltbildung.com screenshot

About Website

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Key Findings

We analyzed Weltbildung.com page load time and found that the first response time was 487 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

weltbildung.com performance score

55

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

92/100

10%

LCP (Largest Contentful Paint)

Value3.4 s

67/100

25%

SI (Speed Index)

Value5.2 s

60/100

10%

TBT (Total Blocking Time)

Value1,220 ms

20/100

30%

CLS (Cumulative Layout Shift)

Value0.072

96/100

15%

TTI (Time to Interactive)

Value9.8 s

28/100

10%

Network Requests Diagram

weltbildung.com

487 ms

www.weltbildung.com

329 ms

style.css

152 ms

adsbygoogle.js

64 ms

links_oben.gif

267 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 51% of them (35 requests) were addressed to the original Weltbildung.com, 10% (7 requests) were made to Pagead2.googlesyndication.com and 9% (6 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (763 ms) belongs to the original domain Weltbildung.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 26.1 kB (8%)

Content Size

334.7 kB

After Optimization

308.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Weltbildung.com main page is 334.7 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 40% of websites need less resources to load. Images take 159.3 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 21.9 kB

  • Original 30.7 kB
  • After minification 30.2 kB
  • After compression 8.8 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 21.9 kB or 71% of the original size.

Image Optimization

-0%

Potential reduce by 246 B

  • Original 159.3 kB
  • After minification 159.1 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Weltbildung images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 535 B

  • Original 133.8 kB
  • After minification 133.8 kB
  • After compression 133.3 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. This website has mostly compressed JavaScripts.

CSS Optimization

-32%

Potential reduce by 3.4 kB

  • Original 10.8 kB
  • After minification 10.8 kB
  • After compression 7.4 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Weltbildung.com needs all CSS files to be minified and compressed as it can save up to 3.4 kB or 32% of the original size.

Requests Breakdown

Number of requests can be reduced by 31 (49%)

Requests Now

63

After Optimization

32

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Weltbildung. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

weltbildung.com

weltbildung.com

487 ms

www.weltbildung.com

www.weltbildung.com

329 ms

style.css

style.css

152 ms

adsbygoogle.js

adsbygoogle.js

64 ms

links_oben.gif

links_oben.gif

267 ms

rechts_oben.gif

rechts_oben.gif

266 ms

weltbildung9.gif

weltbildung9.gif

266 ms

flag-gb.jpg

flag-gb.jpg

265 ms

blank.gif

blank.gif

266 ms

flag-fr.jpg

flag-fr.jpg

263 ms

atom-kraftwerk-b.jpg

atom-kraftwerk-b.jpg

409 ms

sarkophag-b.jpg

sarkophag-b.jpg

409 ms

zentralfriedhof-b.jpg

zentralfriedhof-b.jpg

410 ms

voynich-manuscript-b.jpg

voynich-manuscript-b.jpg

411 ms

dinosaurier-t-rex-b.jpg

dinosaurier-t-rex-b.jpg

411 ms

darpa-roboter-challenge-tease.jpg

darpa-roboter-challenge-tease.jpg

447 ms

doping-labor-b.jpg

doping-labor-b.jpg

528 ms

odyssey-explorer-gold-coin-b.jpg

odyssey-explorer-gold-coin-b.jpg

527 ms

stephen-hawking-b.jpg

stephen-hawking-b.jpg

527 ms

mars-500-station-b.jpg

mars-500-station-b.jpg

559 ms

pavian-penis-b.jpg

pavian-penis-b.jpg

527 ms

e-nummern-b.jpg

e-nummern-b.jpg

558 ms

alm-kuh-weide-b.jpg

alm-kuh-weide-b.jpg

704 ms

edelstein-tigerauge.jpg

edelstein-tigerauge.jpg

703 ms

athos-monk-praying-b.jpg

athos-monk-praying-b.jpg

697 ms

erde-blauer-planet-b.jpg

erde-blauer-planet-b.jpg

697 ms

gallenbaer-8b.jpg

gallenbaer-8b.jpg

704 ms

elephant-zambia-b.jpg

elephant-zambia-b.jpg

704 ms

harley-fuck-off-b.jpg

harley-fuck-off-b.jpg

755 ms

links_unten.gif

links_unten.gif

754 ms

rechts_unten.gif

rechts_unten.gif

763 ms

zrt_lookup.html

zrt_lookup.html

127 ms

show_ads_impl.js

show_ads_impl.js

171 ms

cse.js

cse.js

64 ms

grau2.jpg

grau2.jpg

585 ms

rand_links.gif

rand_links.gif

587 ms

rand_oben.gif

rand_oben.gif

588 ms

rand_rechts.gif

rand_rechts.gif

668 ms

rand_unten.gif

rand_unten.gif

669 ms

cse.js

cse.js

183 ms

cookie.js

cookie.js

167 ms

integrator.js

integrator.js

187 ms

ads

ads

451 ms

cse_element__de.js

cse_element__de.js

173 ms

default+de.css

default+de.css

246 ms

default.css

default.css

253 ms

ads

ads

627 ms

blank.gif

blank.gif

117 ms

gen_204

gen_204

21 ms

pixel

pixel

39 ms

ad

ad

60 ms

window_focus.js

window_focus.js

194 ms

qs_click_protection.js

qs_click_protection.js

274 ms

rx_lidar.js

rx_lidar.js

310 ms

pixel

pixel

636 ms

Dilraba_2022_728x90_1.jpg

Dilraba_2022_728x90_1.jpg

630 ms

abg_lite.js

abg_lite.js

200 ms

omrhp.js

omrhp.js

571 ms

UFYwWwmt.js

UFYwWwmt.js

529 ms

icon.png

icon.png

202 ms

Enqz_20U.html

Enqz_20U.html

29 ms

rum

rum

23 ms

D52GskfJOxf5PECSshYwDvZZSmyyoPi_bK3LssDxWko.js

D52GskfJOxf5PECSshYwDvZZSmyyoPi_bK3LssDxWko.js

17 ms

bounce

bounce

47 ms

pixel

pixel

27 ms

pixel

pixel

27 ms

rum

rum

43 ms

activeview

activeview

31 ms

Accessibility Review

weltbildung.com accessibility score

75

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

weltbildung.com best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

High

Page has valid source maps

SEO Factors

weltbildung.com SEO score

58

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-15

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Weltbildung.com can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Weltbildung.com main page’s claimed encoding is iso-8859-15. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

weltbildung.com

Open Graph description is not detected on the main page of Weltbildung. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: